RF Body-Part Tracking for Fast, Safe Eye Movement Detection
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Solution Overview
Problem
Conventional body-part tracking devices, such as NIR-enabled and magnetic devices, face issues like harm to wearers, inadequate response time, and accuracy problems in augmented, virtual, and mixed reality applications.
Innovation Solution
A body-part tracking device comprising a first electronic component and a first antenna element, configured to receive and transmit RF waves for tracking the movement or position of a body part, such as the eye, and determining the viewing focus without obstructing the wearer's visual field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If NIR waves are used for body-part tracking, then tracking capability is improved, but harm to the wearer increases
Solution Approach 1:
The patent changes the electromagnetic wave parameter from NIR to RF frequency range, specifically using 2.45 GHz or 5.8 GHz bands. This parameter substitution maintains the wireless tracking capability while eliminating the harmful effects of NIR radiation on the wearer's eyes and tissues.
2Measurement precision
If magnetic fields are used for body-part tracking, then tracking capability is improved, but response time and accuracy deteriorate
Solution Approach 1:
The patent replaces magnetic field-based tracking with RF electromagnetic wave-based tracking. The carrier worn by the user transmits RF signals that are received by the frame's antenna, enabling real-time position and movement detection with faster response time compared to magnetic field methods.
3Measurement precision
If a carrier contacts the wearer's eye for tracking, then tracking accuracy is improved, but visual field obstruction increases
Solution Approach 1:
The patent employs a thin, flexible carrier that can be placed on or near the wearer's eye. This thin-film design minimizes the physical bulk and visual obstruction while maintaining sufficient proximity for accurate RF signal transmission and reception, thus preserving the wearer's visual field.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides accurate and timely tracking of body-part movements and viewing directions, ensuring user safety by using non-harmful RF waves and maintaining an unobstructed visual field.
Implementation Method 1
The first antenna element is electrically connected to the first electronic component and configured to receive a first wave. The first electronic component is configured to, in response to the first wave, transmit a second wave.
Data Source
AI summary
The present disclosure provides a body-part tracking device and a body-part tracking method. The body-part tracking device includes a first electronic component and a first antenna element. The first antenna element is electrically connected to the first electronic component and configured to receive a first wave. The first electronic component is configured to, in response to the first wave, transmit a second wave.